140536477 has 4 divisors (see below), whose sum is σ = 142515936. Its totient is φ = 138557020.

The previous prime is 140536457. The next prime is 140536507. The reversal of 140536477 is 774635041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140536477 - 2¹⁵ = 140503709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140536447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989623 + ... + 989764.

It is an arithmetic number, because the mean of its divisors is an integer number (35628984).

Almost surely, 2^140536477 is an apocalyptic number.

It is an amenable number.

140536477 is a deficient number, since it is larger than the sum of its proper divisors (1979459).

140536477 is an equidigital number, since it uses as much as digits as its factorization.

140536477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979458.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 140536477 is about 11854.8081806497. The cubic root of 140536477 is about 519.9118156674.

The spelling of 140536477 in words is "one hundred forty million, five hundred thirty-six thousand, four hundred seventy-seven".